| 摘要 |
PURPOSE:To provide a titled device which an recover efficiently and continuously a concd. electrolyte soln. by the constitution in which electrode units each consisting of a cylindrical porous anode, permeable diaphragm and porous cathode are erected in an electrolytic cell and the electrolyte soln. is recovered from the anode side. CONSTITUTION:A porous cathode 28 of a semi-cylindrical shape having clamping edges is mounted via a permeable diaphragm 27 to a cylindrical porous anode 26 having a frame by means of bolt holes 29, bolts 30 and nuts 31 to constitute an electrode unit 22. The screw part 26a provided in the lower part of said anode 26 is screwed to the internal screw in a fixing part 21a attached to the bottom of an electrolytic cell 21 and plural pieces of such electrode units 22 are erected in the cell 21. A waste washing liquid of plating contg. a dilute chromic acid is passed through the inside of the cell 21 from an inlet 23 to an outlet 24 and electricity is conducted to the anodes 26 and the cathodes 28 to perform electrolysis then the concentrated chromic acid soln. leaches from the inside of the anodes 26 and falls by gravity. Such soln. is continuously recovered through the recovering port 33 of the part 21a. |
